Bolting (horticulture)

Under Bolting refers to the extension of the plant shoots and formation of inflorescences and thus the transition of the plant from the vegetative to the generative phase. Bolting is the precondition for the flowering, pollination and seed formation in many plant species. In the production of feed and food crops such as fodder beet, sugar beet and garden salad bolting is undesirable because these plants are not the seed but beets in the underground part of the plant and when the lettuce leaves are used.

Lap timer Temperature:

Some plant species shot only if they are temporarily exposed to low temperatures. This is important in agriculture in the choice of sowing timing of crops. Winter cereals must therefore be sown before the winter, so that a sufficient vernalization is possible. Only then shot the plants after dormancy next spring and form the desired seed ( grain). Seeds and plants but can also be artificially vernalized.

Fodder beet and sugar beet are biennial plants, they usually shot in the second year after sowing. Due to unfavorable weather conditions after sowing ( late frost, low soil temperatures ) an undesired stem elongation in the year of sowing can occur in individual plants. These plants are referred to as " bolters "; they are very detrimental for harvesting and processing.

Lap timer day length:

If stem of garden salad is triggered by the summer day length. Lettuce is a long-day plant that schosst at an exposure of more than 12 hours per day, forming seed heads. Can be Prevent this stem elongation by temporarily covering the salad crops with opaque materials or by darkening in greenhouses.

Artificial womb triggering:

In plant breeding, bolting is occasionally " artificially" created by the plants over a certain period low temperatures or artificial light exposure. Through such measures, the research can be carried out regardless of the season.